Browsing: Public Safety

Happy Pi Day! No, not pie day, Pi Day. That Greek character pi, π, that you’ve heard of but aren’t quite sure what the big deal is. Pi is the ratio of a circle’s circumference to its diameter. As yawn-inducing as that may sound, it’s an important ratio because pi is the same no matter the size of the circle. This magical ratio, pi, is true for the circle describing the tire of an automobile or a circle going around the entire Earth. We can use pi to calculate a diameter. If the circumference of the Earth at the equator is 40,075 kilometers, which it is, then the diameter of the Earth is equal to the circumference divided by pi,…

Flu season typically peaks between December and February, but by the time the winter holidays roll around, many of us will have already waited in line at area clinics, grocery stores, and pharmacies to get our annual flu shot. The Centers for Disease Control reports that U.S. vaccination efforts since 1994 have prevented an estimated 16 million illnesses every year. Even so, some people choose to avoid vaccination, citing reasons like a lack of confidence in its usefulness, complication risks, or religious beliefs. Some news outlets thrive on the controversy, sensationalizing reports of disease outbreaks, possible vaccine failures, and anti-vaccination propaganda. Yet the public debates have missed a critical factor in vaccine effectiveness: temperature. That’s right. To work correctly, all…